docs: def init_device(**kwargs):
      """same arguments as OCLDevice.__init__
      e.g.
      id_platform = 0
      id_device = 1
      ....
      """
      new_device = OCLDevice(**kwargs)
  
      # just change globals if new_device is different from old
      if _ocl_globals.device.device != new_device.device:
          _ocl_globals.device = new_device